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tipc: convert legacy nl socket dump to nl compat

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Convert socket (port) listing to compat dumpit call. If a socket
(port) has publications a second dumpit call is issued to collect them
and format then into the legacy buffer before continuing to process
the sockets (ports).

Command converted in this patch:
TIPC_CMD_SHOW_PORTS

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Alpe
2015-02-09 09:50:11 +01:00
committed by David S. Miller
parent 44a8ae94fd
commit 487d2a3a13
4 changed files with 111 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

111
net/tipc/netlink_compat.c
View File

@@ -36,6 +36,7 @@
#include "bearer.h"
#include "link.h"
#include "name_table.h"
#include "socket.h"
#include <net/genetlink.h>
#include <linux/tipc_config.h>
@@ -718,6 +719,109 @@ out:
return 0;
}
static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
struct nlattr **attrs)
{
u32 type, lower, upper;
struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL], NULL);
type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]);
lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]);
upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]);
if (lower == upper)
tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
else
tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
return 0;
}
static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
{
int err;
void *hdr;
struct nlattr *nest;
struct sk_buff *args;
struct tipc_nl_compat_cmd_dump dump;
args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!args)
return -ENOMEM;
hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
TIPC_NL_PUBL_GET);
nest = nla_nest_start(args, TIPC_NLA_SOCK);
if (!nest) {
kfree_skb(args);
return -EMSGSIZE;
}
if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
kfree_skb(args);
return -EMSGSIZE;
}
nla_nest_end(args, nest);
genlmsg_end(args, hdr);
dump.dumpit = tipc_nl_publ_dump;
dump.format = __tipc_nl_compat_publ_dump;
err = __tipc_nl_compat_dumpit(&dump, msg, args);
kfree_skb(args);
return err;
}
static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
struct nlattr **attrs)
{
int err;
u32 sock_ref;
struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK], NULL);
sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
if (sock[TIPC_NLA_SOCK_CON]) {
u32 node;
struct nlattr *con[TIPC_NLA_CON_MAX + 1];
nla_parse_nested(con, TIPC_NLA_CON_MAX, sock[TIPC_NLA_SOCK_CON],
NULL);
node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
tipc_zone(node),
tipc_cluster(node),
tipc_node(node),
nla_get_u32(con[TIPC_NLA_CON_SOCK]));
if (con[TIPC_NLA_CON_FLAG])
tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n",
nla_get_u32(con[TIPC_NLA_CON_TYPE]),
nla_get_u32(con[TIPC_NLA_CON_INST]));
else
tipc_tlv_sprintf(msg->rep, "\n");
} else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
tipc_tlv_sprintf(msg->rep, " bound to");
err = tipc_nl_compat_publ_dump(msg, sock_ref);
if (err)
return err;
}
tipc_tlv_sprintf(msg->rep, "\n");
return 0;
}
static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
{
struct tipc_nl_compat_cmd_dump dump;
@@ -775,6 +879,12 @@ static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
dump.dumpit = tipc_nl_name_table_dump;
dump.format = tipc_nl_compat_name_table_dump;
return tipc_nl_compat_dumpit(&dump, msg);
case TIPC_CMD_SHOW_PORTS:
msg->rep_size = ULTRA_STRING_MAX_LEN;
msg->rep_type = TIPC_TLV_ULTRA_STRING;
dump.dumpit = tipc_nl_sk_dump;
dump.format = tipc_nl_compat_sk_dump;
return tipc_nl_compat_dumpit(&dump, msg);
}
return -EOPNOTSUPP;
@@ -881,6 +991,7 @@ static int tipc_nl_compat_tmp_wrap(struct sk_buff *skb, struct genl_info *info)
case TIPC_CMD_SET_LINK_WINDOW:
case TIPC_CMD_RESET_LINK_STATS:
case TIPC_CMD_SHOW_NAME_TABLE:
case TIPC_CMD_SHOW_PORTS:
return tipc_nl_compat_recv(skb, info);
}